CVE-2017-16931
critical
CVSS v3
9.8
CVSS v2
7.5
VIR risk
9.8
Description
parser.c in libxml2 before 2.9.5 mishandles parameter-entity references because the NEXTL macro calls the xmlParserHandlePEReference function in the case of a '%' character in a DTD name.
Predictions
Exploit likelihood
97%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2017-16931
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2017-16931.html
Vendor advisory: cve@mitre.org — https://github.com/GNOME/libxml2/commit/e26630548e7d138d2c560844c43820b6767251e3
Vendor advisory: cve@mitre.org — http://xmlsoft.org/news.html
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 2.9.4+dfsg1-3.1 |
| debian | bullseye | fixed | 2.9.4+dfsg1-3.1 |
| debian | forky | fixed | 2.9.4+dfsg1-3.1 |
| debian | sid | fixed | 2.9.4+dfsg1-3.1 |
| debian | trixie | fixed | 2.9.4+dfsg1-3.1 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| xmlsoft | libxml2 | {"endIncluding":"2.9.4"} | |
References
- http://xmlsoft.org/news.html
- https://bugzilla.gnome.org/show_bug.cgi?id=766956
- https://github.com/GNOME/libxml2/commit/e26630548e7d138d2c560844c43820b6767251e3
- https://lists.debian.org/debian-lts-announce/2017/11/msg00041.html
- https://www.oracle.com//security-alerts/cpujul2021.html
- https://www.suse.com/security/cve/CVE-2017-16931.html
- https://security-tracker.debian.org/tracker/CVE-2017-16931
CWEs
CWE-119
Verify integrity in audit chain (admin only). AS-IS.